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Optical Engineering

Content-adaptive color transform for image compression
Author(s): Alexander Suhre; Kivanc Kose; Ahmet E. Cetin; Metin N. Gurcan
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Paper Abstract

In this paper, an adaptive color transform for image compression is introduced. In each block of the image, coefficients of the color transform are determined from the previously compressed neighboring blocks using weighted sums of the RGB pixel values, making the transform block-specific. There is no need to transmit or store the transform coefficients because they are estimated from previous blocks. The compression efficiency of the transform is demonstrated using the JPEG image coding scheme. In general, the suggested transformation results in better peak signal-to-noise ratio (PSNR) values for a given compression level.

Paper Details

Date Published: 1 May 2011
PDF: 8 pages
Opt. Eng. 50(5) 057003 doi: 10.1117/1.3574071
Published in: Optical Engineering Volume 50, Issue 5
Show Author Affiliations
Alexander Suhre, Bilkent Univ. (Turkey)
Kivanc Kose, Bilkent Univ. (Turkey)
Ahmet E. Cetin, Bilkent Univ. (Turkey)
Metin N. Gurcan, The Ohio State Univ. Medical Ctr. (United States)

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